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How to choose the right sunglasses? What are the causes of burning eyes?
The German Association of Ophthalmologists said that burning eyes have several causes, some of which are simple and others are serious.
The association stated that the burning eye is often due to fatigue due to sitting in front of a computer screen for a long time, or the entry of something strange in the eye, such as a quantity of shampoo while showering or swimming pool water containing chlorine.
How to choose the right sunglasses?
German optometrist Sarah Koster explained that the appropriate sunglasses should provide adequate protection for the eye from harmful ultraviolet rays, which can be indicated by the UV 400 mark on the arm of the glasses, or by The phrase "100 UV protection".
Koster added that the color of the lenses is not evidence that the glasses provide protection for the eyes from ultraviolet rays, as there are transparent lenses that provide protection from the harmful rays of the sun.
Dark-colored lenses that do not contain UV protection also cause damage to the eye, because the pupil dilates in the dark, and therefore more harmful rays are transmitted to the eye.
protection filters
For her part, German optician Peggy Kleindienst pointed out that the sunglasses contain the following protective filters:
Sun protection filters: They protect against absolute dazzling by intense sunlight.
Special filters: They absorb part of the short-wave visible light field, and are used with certain eye diseases.
Polarizing filters: They work to reduce reflections of shiny surfaces such as water and minerals.
Blue light filters: They are used while working in front of a computer screen to absorb the blue light emitted by the screen, to reduce eye strain
Should I wear sunglasses in winter?
For his part, the Lebanese optometrist, Amir Abu Adila, explains that sunglasses should be worn on a sunny day as well as on a rainy day, due to the high percentage of ultraviolet (UV) rays, as the iris modifies the percentage of light that enters the eyes.In the dark, the pupil of the eye expands, allowing more light to enter, and in the absence of UV400, ultraviolet rays enter the retina, which will be destroyed over time, passing through the eye's crystalline lens, which leads to a faster loss of transparency and purity.
Accordingly, it is advised to choose the right place to buy sunglasses, and not to buy sunglasses from clothing stores, pharmacies, or others, or from online shopping.
Accordingly, it is advised to choose the right place to buy sunglasses, and not to buy sunglasses from clothing stores, pharmacies, or others, or from online shopping.
colored lenses
Koster pointed out that colored lenses work to reduce the amount of light transmitted to the eye, so that one can see well without having to narrow his eyes during the brightness of the sun or when practicing water or winter sports.
The degree of tinting is divided into 5 classes: Class 0 allows 80% to 100% light transmittance, and extremely dark lenses (Class 4) allow only 3% to 8% light transmittance. Extremely dark lenses are suitable for mountain tours, for example, while they are not suitable for driving a car.
When do we examine the eyes?
Abu Adila said that in the eye examination, the age group, family history, the person wearing medical glasses and whether he has any eye disease are taken into account. As for the child, Abu Adila recommends examining him at birth to ensure that the eye is free of congenital cataract and eye cancer (retinoblastoma) or any obstructions or clouding of the eye’s light stream, and the examination is repeated at the age of 3 years, to ensure that the eye is free of visual impairment. Lazy eye (Amblyopia).
At the level of adolescents and schoolchildren under the age of 18, Abu Adela added that their eyesight examination should be repeated every one or two years at the most, and people under the age of 40 every two years for those who do not suffer from any problems or diseases in their eyes.
How do you face a stye?
The German Association of Ophthalmologists said that a stye is an inflammation of the sebaceous gland located on the tip of the eyelid due to bacteria, noting that it causes redness of the eye and a feeling of annoying pain and itching.
The association added that the stye usually goes away on its own, noting the possibility of using an eye ointment containing an antibiotic to treat it. In the case of severe troubles can take medication tablets for treatment.
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